@layer base, layout, components;

:root {
  --color-bg:           #fdf6e3;
  --color-ink:          #1a1a2e;
  --color-accent:       #e63946;
  --color-accent-blue:  #7eb8f7;
  --color-accent-pink:  #ff85a1;
  --color-accent-gold:  #f4c542;
  --color-panel-border: #111;

  --font-title: 'Bangers', cursive;
  --font-body:  'Nunito', sans-serif;

  --border-width:   4px;
  --shadow-ink:     5px 5px 0 var(--color-ink);
  --radius-panel:   6px;
  --header-padding: clamp(1rem, 4vw, 2rem);
}

@layer base {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-ink);
    min-height: 100dvh;

    background-image: radial-gradient(
      circle,
      rgba(26, 26, 46, 0.08) 1px,
      transparent 1px
    );
    background-size: 18px 18px;
  }

  a {
    color: var(--color-accent);
    text-decoration: none;
    font-weight: 700;
  }

  a:hover {
    text-decoration: underline;
  }
}

@layer layout {
  body {
    display: grid;
    grid-template-rows: auto 1fr;
  }

  .main-content {
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
    padding: clamp(1rem, 4vw, 2rem);
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
  }
}

@layer components {
  /* ── Breadcrumbs ── */
  .breadcrumbs {
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.65;
    margin-bottom: 0.75rem;
  }

  .breadcrumbs a {
    color: var(--color-ink);
    text-decoration: none;
  }

  .breadcrumbs a:hover {
    color: var(--color-accent);
    text-decoration: underline;
  }

  .breadcrumbs span {
    color: var(--color-ink);
  }

  /* ── Prose headings in main content ── */
  .main-content h2 {
    font-family: var(--font-title);
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    color: var(--color-ink);
    -webkit-text-stroke: 1px var(--color-accent);
    text-stroke: 1px var(--color-accent);
    letter-spacing: 0.04em;
    margin-top: 0.5rem;
  }

  .main-content h3 {
    font-family: var(--font-body);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-ink);
    border-left: 4px solid var(--color-accent);
    padding-left: 0.6rem;
    margin-top: 0.25rem;
  }

  .main-content p {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-top: 0.5rem;
  }

  /* ── Quick Answer callout ── */
  .quick-answer {
    border: 3px solid var(--color-ink);
    border-radius: var(--radius-panel);
    background-color: var(--color-accent-blue);
    box-shadow: 4px 4px 0 var(--color-ink);
    padding: 0.9rem 1.1rem;
    font-size: 0.92rem;
    line-height: 1.6;
  }

  .quick-answer strong {
    font-family: var(--font-title);
    font-size: 1.1rem;
    letter-spacing: 0.04em;
    display: block;
    margin-bottom: 0.25rem;
  }

  /* ── Arc / Section blocks ── */
  .arc-block {
    border: 2px solid var(--color-ink);
    border-radius: var(--radius-panel);
    background-color: var(--color-bg);
    box-shadow: 3px 3px 0 var(--color-ink);
    padding: 0.85rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
  }

  /* ── FAQ section ── */
  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }

  .faq-item {
    border: 3px solid var(--color-ink);
    border-radius: var(--radius-panel);
    background-color: var(--color-bg);
    box-shadow: 3px 3px 0 var(--color-ink);
    padding: 0.9rem 1.1rem;
  }

  .faq-item dt {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-accent);
    margin-bottom: 0.35rem;
  }

  .faq-item dd {
    font-size: 0.92rem;
    line-height: 1.65;
    color: var(--color-ink);
  }

  /* ── What to Read Next ── */
  .what-next-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }

  .what-next-list li {
    border: 3px solid var(--color-ink);
    border-radius: var(--radius-panel);
    background-color: var(--color-bg);
    box-shadow: 3px 3px 0 var(--color-ink);
    transition: transform 0.1s, box-shadow 0.1s;
    padding: 0.85rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
  }

  .what-next-list li:hover {
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--color-ink);
  }

  .what-next-title {
    display: block;
    color: var(--color-ink);
    font-weight: 700;
    font-size: 0.98rem;
    line-height: 1.2;
  }

  .what-next-list li a.what-next-title:hover {
    color: var(--color-accent);
    text-decoration: none;
  }

  .what-next-description {
    margin: 0;
    display: block;
    font-size: 0.92rem;
    line-height: 1.6;
  }

  /* ── Page footer ── */
  .page-footer {
    font-size: 0.8rem;
    color: var(--color-ink);
    opacity: 0.6;
    text-align: center;
    padding-top: 0.5rem;
    border-top: 2px solid var(--color-ink);
  }

  .page-footer a {
    color: var(--color-ink);
    font-weight: 700;
  }

  /* ── Header ── */
  .site-title-link {
    text-decoration: none;
    color: inherit;
    display: block;
  }

  .header-brand {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--color-ink);
    opacity: 0.65;
    margin-bottom: 0.75rem;
  }

  .header-brand:hover {
    color: var(--color-accent);
    text-decoration: none;
    opacity: 1;
  }

  .site-header {
    position: relative;
    text-align: center;
    padding: var(--header-padding);
    border: var(--border-width) solid var(--color-panel-border);
    border-radius: var(--radius-panel);
    box-shadow: var(--shadow-ink);
    margin: clamp(0.5rem, 1.5vw, 1rem) clamp(1rem, 4vw, 3rem);
    background-color: var(--color-bg);
    overflow: hidden;
    z-index: 0;
  }

  .site-header::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: conic-gradient(
      from 0deg at 50% 50%,
      transparent 0deg,
      rgba(26, 26, 46, 0.04) 1deg,
      transparent 2deg,
      transparent 10deg,
      rgba(26, 26, 46, 0.04) 11deg,
      transparent 12deg,
      transparent 20deg,
      rgba(26, 26, 46, 0.04) 21deg,
      transparent 22deg,
      transparent 30deg,
      rgba(26, 26, 46, 0.04) 31deg,
      transparent 32deg,
      transparent 40deg,
      rgba(26, 26, 46, 0.04) 41deg,
      transparent 42deg,
      transparent 50deg,
      rgba(26, 26, 46, 0.04) 51deg,
      transparent 52deg,
      transparent 60deg,
      rgba(26, 26, 46, 0.04) 61deg,
      transparent 62deg
    );
    z-index: -1;
    pointer-events: none;
  }

  .back-link {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-ink);
    opacity: 0.6;
    margin-bottom: 0.75rem;
    transition: opacity 0.2s;
  }

  .back-link:hover {
    opacity: 1;
    text-decoration: none;
  }

  .series-title {
    font-family: var(--font-title);
    font-size: clamp(2.5rem, 7vw, 5rem);
    color: var(--color-accent);
    -webkit-text-stroke: 2px var(--color-ink);
    text-stroke: 2px var(--color-ink);
    letter-spacing: 0.04em;
    line-height: 1;
  }

  .category-header .series-title {
    font-size: clamp(2rem, 5vw, 3.4rem);
  }

  .site-tagline {
    font-family: var(--font-body);
    font-size: clamp(0.8rem, 2vw, 1rem);
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-top: 0.5rem;
    opacity: 0.7;
  }

  /* ── Reading Note ── */
  .reading-note {
    border: 3px solid var(--color-ink);
    border-radius: var(--radius-panel);
    background-color: var(--color-accent-gold);
    box-shadow: 4px 4px 0 var(--color-ink);
    padding: 1rem 1.25rem;
    font-size: 0.95rem;
    line-height: 1.6;
  }

  /* ── Book List ── */
  .book-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    counter-reset: book-counter;
  }

  .book-list li {
    counter-increment: book-counter;
    border: 3px solid var(--color-ink);
    border-radius: var(--radius-panel);
    background-color: var(--color-bg);
    box-shadow: 3px 3px 0 var(--color-ink);
    transition: transform 0.1s, box-shadow 0.1s;
  }

  .book-list li:hover {
    transform: translate(-1px, -1px);
    box-shadow: 4px 4px 0 var(--color-ink);
  }

  .book-list li a {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    color: var(--color-ink);
    font-weight: 700;
    font-size: 0.95rem;
  }

  .book-list li a::before {
    content: counter(book-counter);
    font-family: var(--font-title);
    font-size: 1.4rem;
    color: var(--color-accent);
    -webkit-text-stroke: 1px var(--color-ink);
    text-stroke: 1px var(--color-ink);
    min-width: 2rem;
    text-align: center;
    flex-shrink: 0;
  }

  .book-list li a:hover {
    text-decoration: none;
    color: var(--color-accent);
  }
}